The plunge in US tech stocks came after the Nasdaq 100 Index jumped to its highest level in a month during regular trading. The Invesco QQQ exchange traded fund, which tracks the tech-heavy benchmark, dropped as much as 2.1% in after-hours trading while Amazon.com Inc. fell 4.9%.
The selloff in extended trading was broad-based. Those that derive sales from online advertising followed Alphabet lower, with Meta Platforms Inc. and Pinterest Inc. dropping more than 4% each. Among software companies moving in the wake of Microsoft, Datadog Inc. tumbled 7%, Snowflake Inc. fell 5% and Salesforce Inc. dropped 3%. In the chip space, Analog Devices Inc., ON Semiconductor Corp., and Marvell Technology Inc. also dipped.